<!--
// INCLUDE FILE FOR JAVASCRIPT VALIDATION

  function IsBlank(s) {
    var len=s.length
    var i
    for(i=0;i<len;++i) {
      if(s.charAt(i)!=" ") return false;
    }
    return true;
  }

  function IsStars(s) {
    var len=s.length
    var i
    for(i=0;i<len;++i) {
      if(s.charAt(i)!="*") return false;
    }
    return true;
  }

  function IsSameChar(s) {
    var FirstChar = s.substr(0,1)
    var len=s.length
    var i
    if(len == 0) return false;
    if(len == 1) return false;
    for(i=0;i<len;++i) {
      if(s.charAt(i)!= FirstChar) return false;
    }
    return true;
  }

  function IsChars(TheValue) {
    var checkOK = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-()'*&,. \t\r\n\f";
    var checkStr = TheValue;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
	 break;
      if (j == checkOK.length) {
        allValid = false;
        break;
      }
    }
    if (!allValid) {
      return false;
    }
    return true;
  }

  function IsNumbers(TheValue) {
    var checkOK = "0123456789";
    var checkStr = TheValue;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
      if (j == checkOK.length) {
        allValid = false;
        break;
      }
    }
    if (!allValid) {
      return false;
    }
    return true;
  }

  function IsChecked(TheField) {
    var radioSelected = false;
    for (i = 0;  i < TheField.length;  i++) {
      if (TheField[i].checked)
        radioSelected = true;
    }
    if (!radioSelected) {
      return false;
    }
    return true;
  }

  function IsEmail(emailStr) {
/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */

var checkTLD=1;

/* The following is the list of known TLDs that an e-mail address must end with. */

var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|uk)$/;

/* The following pattern is used to check if the entered e-mail address
fits the user@domain format.  It also is used to separate the username
from the domain. */

var emailPat=/^(.+)@(.+)$/;

/* The following string represents the pattern for matching all special
characters.  We don't want to allow special characters in the address.
These characters include ( ) < > @ , ; : \ " . [ ] */

var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

/* The following string represents the range of characters allowed in a
username or domainname.  It really states which chars aren't allowed.*/

var validChars="\[^\\s" + specialChars + "\]";

/* The following pattern applies if the "user" is a quoted string (in
which case, there are no rules about which characters are allowed
and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
is a legal e-mail address. */

var quotedUser="(\"[^\"]*\")";

/* The following pattern applies for domains that are IP addresses,
rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
e-mail address. NOTE: The square brackets are required. */

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

/* The following string represents an atom (basically a series of non-special characters.) */

var atom=validChars + '+';

/* The following string represents one word in the typical username.
For example, in john.doe@somewhere.com, john and doe are words.
Basically, a word is either an atom or quoted string. */

var word="(" + atom + "|" + quotedUser + ")";

// The following pattern describes the structure of the user

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

/* The following pattern describes the structure of a normal symbolic
domain, as opposed to ipDomainPat, shown above. */

var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

/* Finally, let's start trying to figure out if the supplied address is valid. */

/* Begin with the coarse pattern to simply break up user@domain into
different pieces that are easy to analyze. */

var matchArray=emailStr.match(emailPat);

if (matchArray==null) {

/* Too many/few @'s or something; basically, this address doesn't
even fit the general mould of a valid e-mail address. */

msgEmail = "email address seems incorrect (check @ and .'s)";
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

// Start by checking that only basic ASCII characters are in the strings (0-127).

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
msgEmail = "this email contains invalid characters.";
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
msgEmail = "this domain name contains invalid characters.";
return false;
   }
}

// See if "user" is valid

if (user.match(userPat)==null) {

// user is not valid

msgEmail = "the email doesn't seem to be valid.";
return false;
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

// this is an IP address

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
msgEmail = "the destination IP address is invalid!";
return false;
   }
}
return true;
}

// Domain is symbolic name.  Check if it's valid.

var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
msgEmail = "the domain name does not seem to be valid.";
return false;
   }
}

/* domain name seems valid, but now make sure that it ends in a
known top-level domain (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding
the domain or country. */

if (checkTLD && domArr[domArr.length-1].length!=2 &&
domArr[domArr.length-1].search(knownDomsPat)==-1) {
msgEmail = "the address must end in a well-known domain or two letter " + "country.";
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
msgEmail = "this address is missing a hostname!";
return false;
}

// If we've gotten this far, everything's valid!
return true;
  }

  function IsURL(TheURL) {
    var checkOK = "abcdefghijklmnopqrstuvwxyz0123456789-._/:";
    var checkStr = TheURL;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
	 break;
      if (j == checkOK.length) {
        allValid = false;
        break;
      }
    }

    if (!allValid) {
      return false;
    }
    return true;
  }

  function IsWWW(TheURL) {
    var checkOK = "abcdefghijklmnopqrstuvwxyz0123456789-._/:";
    var checkStr = TheURL;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
	 break;
      if (j == checkOK.length) {
        allValid = false;
        break;
      }
    }

    if ((TheURL.indexOf('http://www.', 0)==-1)) {
        allValid = false;
	}

    if (!allValid) {
      return false;
    }
    return true;
  }

  function IsNWW(TheURL) {
    var checkOK = "abcdefghijklmnopqrstuvwxyz0123456789-._/:";
    var checkStr = TheURL;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
	 break;
      if (j == checkOK.length) {
        allValid = false;
        break;
      }
    }

    if ((TheURL.indexOf('http://nww.', 0)==-1)) {
        allValid = false;
	}

    if (!allValid) {
      return false;
    }
    return true;
  }

  function IsIP(TheIP) {
    var checkOK = "0123456789.";
    var checkStr = TheIP;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
	 break;
      if (j == checkOK.length) {
        allValid = false;
        break;
      }
    }

    if (!allValid) {
      return false;
    }
    return true;
  }


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